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Canon PowerShot S120

Exif Tags

Using the exiv2 command linee tool (should be packaged into every GNU/Linux distribution), you can view all the Exif metadata contained in each photo, including unknown values:

exiv2 print -p a -u IMG_1858.JPG

There are several proprietary Canon tags stored for each photo, as far I know, there is not a comprensive guide to that tags. An useful resource can be the Metadata reference tables, an index of the names of all tags recognized by Exiv2 library.

Here are some of the more interesting ones. Notice that Exiv2 library v.0.24 is rather incomplete and sometimes misleading in reporting Canon MakerNote tags!